9. D. The present age of a father is equal to the Sum of the ages of his 5 children. 12 years hence, the run of the ages of his children will be twice the age of their father.
find the present age of the farther
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Undulatory swimming in fish is powered by the segmental body musculature of the myotomes. Power generated by this muscle and the interactions between the fish and the water generate a backward-travelling wave of lateral displacement of the body and caudal fin.
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the age of father is 36 years old
Let the ages of the 5 children now be x.
The age of the father now =x
Tweleve years hence the sume of the ages of the five children =x+5(12)
=x+60
Ages of the father twelve years hence =x+12
x+60=2(x+12)
x+60=2x+24
x=36
Let the ages of the 5 children now be x.
The age of the father now =x
Tweleve years hence the sume of the ages of the five children =x+5(12)
=x+60
Ages of the father twelve years hence =x+12
x+60=2(x+12)
x+60=2x+24
x=36
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